US3436158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exposure meter using two indicator lamps
Assignee: P Gossen and Co GmbH
•
Filing: 1968-02-23
•
Granted: 1969-04-01
•
Expires: 1988-02-23
Abstract
No abstract record available.
Inventors
- 👤 Helmut Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:17
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/10; G01J1/20; G01J1/22; G01J1/24; G01J1/42; G01J1/4209; G01J1/4214; G01J1/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21210E
Cited
US2661650A
Cited
US2915938A
Cited
GB997047A
Cited
US3323430A
Cited
US3397629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |