US2588977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indexing and drive mechanism
Assignee: GTE Sylvania Inc
•
Filing: 1945-12-19
•
Granted: 1952-03-11
•
Expires: 1965-12-19
Abstract
No abstract record available.
Inventors
- 👤 Stanley J Gartner
- 👤 Paul G Pilkinton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:48
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/32; Y; Y10; Y10T; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1453; Y10T74/1459; Y10T74/1494; Y10T74/15; Y10T74/1503
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US290066A
Cited
US646287A
Cited
US986378A
Cited
US1199398A
Cited
US1896732A
Cited
US2291382A
Cited
US2376540A
Cited
US2393294A
Cited
US2413960A
Cited
US2421327A
Cited
US2421929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |