US2553100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film viewer flashlight attachment
Assignee: Individual
•
Filing: 1948-04-21
•
Granted: 1951-05-15
•
Expires: 1968-04-21
Abstract
No abstract record available.
Inventors
- 👤 Lynch Clarence Still
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:10
CPC Classifications
F; F21; F21V; F21V33/00; G; G03; G03B; G03B19/00; G03B19/02; G03B19/04; F21L; F21L4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US778891A
Cited
US1291710A
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US1516718A
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US1600067A
Cited
US1649638A
Cited
US1729660A
Cited
US2092672A
Cited
US2090086A
Cited
US2215829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |