US2979601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic flash attachment
Assignee: Individual
•
Filing: 1957-11-20
•
Granted: 1961-04-11
•
Expires: 1977-11-20
Abstract
No abstract record available.
Inventors
- 👤 John V Mcclees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:05
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1691366A
Cited
GB512450A
Cited
US2441489A
Cited
US2614783A
Cited
US2772498A
Cited
US2761056A
Cited
US2760048A
Cited
GB742679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |