Patent US3336769A successfully refreshed from Google Patents.
US3336769A
Expired / Lapsed
US
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Self-adjusting key-actuated mechanism for mailbox doors
Assignee: Individual
•
Filing: 1964-12-15
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Granted: 1967-08-22
•
Expires: 1984-12-15
Abstract
No abstract record available.
Inventors
- 👤 Fred J Russell
- 👤 Richard L Armstrong
- 👤 Fred L Jennic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:29
CPC Classifications
E; E05; E05B; E05B55/00; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5246; Y10T70/5296; Y10T70/5319; Y10T70/5341; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7655
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US549134A
Cited
US1549603A
Cited
US2207878A
Cited
US2720103A
Cited
US3011331A
Cited
DE1063924B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |