US3500438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical time delay program recorder
Assignee: United States Department of the Navy
•
Filing: 1967-01-25
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Granted: 1970-03-10
•
Expires: 1987-01-25
Abstract
No abstract record available.
Inventors
- 👤 George W Hunka
- 👤 Jack J Rudnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:32
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/12; G05B19/124; G01; G01D; G01D15/00; G01D15/14; G05B2219/00; G05B2219/20; G05B2219/25; G05B2219/25197
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2891166A
Cited
US2982175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |