US2620713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay switch mechanism for camera flash synchronizers
Assignee: BUSCH PREC CAMERA CORP
•
Filing: 1950-05-19
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Granted: 1952-12-09
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Expires: 1970-05-19
Abstract
No abstract record available.
Inventors
- 👤 Michael L Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:21
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0452
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1232050A
Cited
US1866422A
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US1986513A
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US1968597A
Cited
US2218950A
Cited
US2439417A
Cited
US2553662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |