US2691836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact operated vibrating latch gravity gate
Assignee: Individual
•
Filing: 1953-02-26
•
Granted: 1954-10-19
•
Expires: 1973-02-26
Abstract
No abstract record available.
Inventors
- 👤 Andrew C David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:38
CPC Classifications
E; E05; E05F; E05F13/00; E05F13/04; Y; Y10; Y10S; Y10S292/00; Y10S292/04; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0848; Y10T292/0849; Y10T292/086; Y10T292/68; Y10T292/696; Y10T292/702
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1183575A
Cited
US1528093A
Cited
US2463392A
Cited
US2572171A
Cited
US2538668A
Cited
US2594033A
Cited
US2650443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |