US1973971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doorcatch
Assignee: Individual
•
Filing: 1932-10-18
•
Granted: 1934-09-18
•
Expires: 1952-10-18
Abstract
No abstract record available.
Inventors
- 👤 Peter D West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:53
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/06; E05C19/063; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49876; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0814; Y10T292/0817; Y10T292/0876; Y10T292/088; Y10T292/0894; Y10T292/0907; Y10T292/62; Y10T70/00; Y10T70/80; Y10T70/8973
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-09-17 | 1938-03-19 | 1938-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-09-17 | 1942-03-19 | 1942-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-09-17 | 1946-03-19 | 1946-09-18 | $7700.00 | Window Closed / Lapsed |