US2549699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic method and apparatus
Assignee: Individual
•
Filing: 1945-09-19
•
Granted: 1951-04-17
•
Expires: 1965-09-19
Abstract
No abstract record available.
Inventors
- 👤 Dean B Mclaughlin
- 👤 Gerald S Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:09
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US831426A
Cited
US1176384A
Cited
US1652271A
Cited
US1528021A
Cited
US1906973A
Cited
GB382729A
Cited
US2059633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |