US2723846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delayed actuator
Assignee: Individual
•
Filing: 1951-02-13
•
Granted: 1955-11-15
•
Expires: 1971-02-13
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Holder
- 👤 Holder Manfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:02
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323230A
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US942623A
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US1033348A
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US1099073A
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US1155981A
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US2103378A
Cited
US2190842A
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US2119743A
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US2308404A
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US2570558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |