US3370789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Menstrual calculator
Assignee: LAWRENCE M SHERMAN
•
Filing: 1966-10-10
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Granted: 1968-02-27
•
Expires: 1986-10-10
Abstract
No abstract record available.
Inventors
- 👤 Lawrence M Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:40
CPC Classifications
G; G06; G06G; G06G1/00; G06G1/0005; G06G1/0015; G06C; G06C3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB814389A
Cited
US2512915A
Cited
US2517793A
Cited
US3278118A
Cited
US2190640A
Cited
US2650764A
Cited
US2808206A
Cited
US3279696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |