Patent US3401958A successfully refreshed from Google Patents.
US3401958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1965-02-19
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Granted: 1968-09-17
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Expires: 1985-02-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Demyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:58
CPC Classifications
F; F16; F16B; F16B33/00; F16B33/004; F16B2200/00; F16B2200/40; F16B2200/406; F16L; F16L5/00; F16L5/02; F16L5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US643237A
Cited
US1978958A
Cited
US2277885A
Cited
US2459609A
Cited
US2723048A
Cited
US2874749A
Cited
US2936787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |