US2978267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch construction
Assignee: National Lock Co
•
Filing: 1958-06-18
•
Granted: 1961-04-04
•
Expires: 1978-06-18
Abstract
No abstract record available.
Inventors
- 👤 Edwin W North
- 👤 Wayne C Bates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:05
CPC Classifications
E; E05; E05C; E05C1/00; E05C1/08; E05C1/12; E05C1/16; E05B; E05B13/00; E05B13/002; E05B13/004; Y; Y10; Y10S; Y10S292/00; Y10S292/38; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/0982; Y10T292/0989; Y10T292/1014; Y10T292/1022; Y10T292/1028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1060413A
Cited
US2469113A
Cited
US2499165A
Cited
US2707121A
Cited
US2782061A
Cited
US2835125A
Cited
US2851871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |