US3420995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-locking latch
Assignee: Lithonia Lighting Inc
•
Filing: 1965-10-22
•
Granted: 1969-01-07
•
Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Bruce Patten Dunckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:25
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21V21/04; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0886; Y10T292/0887; Y10T292/0892
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US768177A
Cited
US1792292A
Cited
US2965747A
Cited
US3091687A
Cited
US3189740A
Cited
US3294967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |