US2416889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush-type door latch
Assignee: HARTWELL AVIAT SUPPLY CO
•
Filing: 1944-02-09
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Granted: 1947-03-04
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Expires: 1964-02-09
Abstract
No abstract record available.
Inventors
- 👤 Weldon R Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:09
CPC Classifications
E; E05; E05C; E05C1/00; E05C1/08; E05C1/12; E05C1/14; E05C1/145; Y; Y10; Y10S; Y10S292/00; Y10S292/31; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0994
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR693155A
Cited
FR782320A
Cited
US2055688A
Cited
US2029199A
Cited
US2121531A
Cited
US2201444A
Cited
US2253547A
Cited
US2336458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |