US2870887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way automatic locking actuators
Assignee: Individual
•
Filing: 1954-04-12
•
Granted: 1959-01-27
•
Expires: 1974-04-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard W Cole
- 👤 Delwyn L Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:22
CPC Classifications
F; F16; F16B; F16B1/00; F16B1/02; F16B1/04; B; B64; B64C; B64C13/00; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/2066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US275388A
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US1471398A
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US1385785A
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US1944116A
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FR797525A
Cited
US2240932A
Cited
US2300022A
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GB573005A
Cited
US2583428A
Cited
US2660902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |