US2700916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for restricting light acceptance angles for light meters
Assignee: Individual
•
Filing: 1951-06-06
•
Granted: 1955-02-01
•
Expires: 1971-06-06
Abstract
No abstract record available.
Inventors
- 👤 Samuel A Muirhead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:45
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/02; G01J1/04; G01J1/06; G01J1/0407; G01J1/0411; G01J1/0437; G01J1/044
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |