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US2816341A
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Assignee: Technical Operations Inc
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Filing: 1954-10-25
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Granted: 1957-12-17
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Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 Robert J Prest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:59
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/06; F16B21/07; G; G21; G21F; G21F7/00; G21F7/06; G21F7/066; H; H01; H01R; H01R13/00; H01R13/02; H01R13/20; H01R13/213; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/51; Y10S24/53; Y10S24/60; Y10T; Y10T24/00; Y10T24/45; Y10T24/45152; Y10T24/4522; Y10T24/45225; Y10T24/4588
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |