"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?"
The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 7637418 | Advanced gestational wheel calculator The gestational wheel calculator of the current invention greatly extends the function and usefulness of the basic gestational calculation wheel by providing increased accuracy of gestational dates by using an average cycle length adjuster, provides paternity inform... | 12/29/2009 |
| 7337946 | Device for resolving interpersonal relationship issues A device for resolving interpersonal relationship issues comprising: (a) a plurality of text sheets comprised of flexible, transparent material; (b) a rigid front cover; and (c) a rigid back cover; wherein each text sheet comprises an opaque band bearing text on eit... | 03/04/2008 |
| 6886740 | Apparatus for calculating time periods A single axis rotatable disc calendar for calculating time periods and future dates based on current or past events is disclosed. In particular, calculators for determining fertility timing, testing and treatment dates have a base circular calendar (61) and o... | 05/03/2005 |
| 6769602 | Feto-maternal calendar calculator A feto-maternal calendar calculator (10) provides for calculating the gestational age of a fetus from the calendar date of the mother's last menstrual cycle. Using the calculated gestational age, the user of the calendar calcalator may determine appropriate g... | 08/03/2004 |
| 5310994 | Fertility period calculator A fertility period calculator especially suited for third world countries, non-complex in operation, having two rotatable disks that require identification of numerals representing the days of the month and the average number of days in the user's menstru... | 05/10/1994 |
| 4960980 | Bioclock calculating device for human body A new type of bioclock calculating device for the human body comprising a ring, a set of discs and some accessories. They are marked with data graduation, age graduation and curves showing the cycles of physical, emotional and intellectual (PEI) rhythms. ... | 10/02/1990 |
| 4752674 | Calculator used for displaying ovulation synchronization of donors and recipients in embryo transfer procedures A calculator used for displaying menstrual cycle synchronization of donors and recipients during embryo transfer procedures includes first, second and third members aligned with one another. In accordance with a preferred embodiment, the first member is a... | 06/21/1988 |
| 4737619 | Fertility calculator There is disclosed a calculator adapted to determine optimum fertility time periods for a female, formed by a first scale divided into 365 equal units, each unit assigned a day for each month of a full calendar year, a second scale positioned in operative... | 04/12/1988 |
| 4625099 | Fertility calculator There is disclosed a calculator adapted to determine optimum monthly fertility time periods of a female formed by a first scale divided into 365 equal units, each unit assigned a day and each month of a full calendar year, a second scale positioned in ope... | 11/25/1986 |
| 4551620 | Biorhythms analog computer-calendar A Biorythms analog computer-calendar is provided to display without computations the level of the physical, the emotional, and the intellectual biorythms of a human body. The level of the three biorythms appears on display in analog and digital forms for ... | 11/05/1985 |
| 4454409 | Bra-size calculator A convenient, easy-to-use calculator computes a person's proper bra and cup size given a knowledge of that person's chest, overbust, and band measurements. The calculator comprises a circular slide rule of three superimposed disks, the intermediate disk b... | 06/12/1984 |
| 4350878 | Conception control calendar A calculating device is provided to aid in predicting the periods of fertility and non-fertility during a menstrual cycle of a user. The device includes a first disc having indicia thereon representing the calender days of the present month and the next m... | 09/21/1982 |
| 4270772 | Adjustable biorhythm display assembly An assembly for displaying several biorhythms of an individual in graphical format includes a graph background organized as a calendar and a set of transparent overlays. Each overlay is printed with a sine wave of periodicity corresponding to a specific b... | 06/02/1981 |
| 4232215 | Human reproduction indexing device A human reproduction indexing device for indicating the calendar dates for days of a menstrual cycle on which the probability of conception is the greatest includes a generally circular base member having indicia representing the calendar dates for the da... | 11/04/1980 |
| 4133476 | Visual display calculator A calculator for use in planning the orderly production of swine throughout a calendar year. The calculator includes a base and a disc rotatably mounted on the base. A circular scale is formed on the base around the outer edge of the disc. This circular s... | 01/09/1979 |
| 4092521 | Menstrual calculator A dial calculator for determining periods of fertility and sterility in a menstrual cycle of a human female. In one embodiment, the calculator includes first and second discs each having an annular display of first indicia representing thirty-one days of ... | 05/30/1978 |
| 4035616 | Device for the joint evaluation of several cyclic processes Several transparent elements showing periodically-varying curves and a transparent element showing a date scale are superposed over each other and a ground element which shows a number of year scales of different length, subdivided from 0 to 100 years. Th... | 07/12/1977 |
| 3964674 | Menstrual cycle calculator A menstrual calculator to determine the fertile dates of a period composed of a base panel and dials and a pointer which bear date indicia and are rotatable independently about a common dial pin.... | 06/22/1976 |