US2985703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Primary cell
Assignee: Hamilton Watch Co
•
Filing: 1958-01-28
•
Granted: 1961-05-23
•
Expires: 1978-01-28
Abstract
No abstract record available.
Inventors
- 👤 Walter R Kempf
- 👤 Harold S Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:49
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/102; H01M50/109; H01M6/00; H01M6/04; H01M6/06; H01M6/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US793307A
Cited
US1733866A
Cited
GB617756A
Cited
US2499239A
Cited
US2606942A
Cited
US2575337A
Cited
US2582973A
Cited
US2752693A
Cited
US2781414A
Cited
US2697737A
Cited
US2837593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |