US2930282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exposure metering device
Assignee: Individual
•
Filing: 1955-04-05
•
Granted: 1960-03-29
•
Expires: 1975-04-05
Abstract
No abstract record available.
Inventors
- 👤 Herterich Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:01
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2058531A
Cited
FR802940A
Cited
US2148963A
Cited
US2150365A
Cited
US2325463A
Cited
US2253055A
Cited
US2282659A
Cited
US2584440A
Cited
US2576813A
Cited
US2532417A
Cited
FR1029569A
Cited
US2706428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |