Patent US2976537A successfully refreshed from Google Patents.
US2976537A
Expired / Lapsed
US
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Fastener assembly for joint for paper-machine drier felts
Assignee: Individual
•
Filing: 1955-08-02
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Granted: 1961-03-28
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Expires: 1975-08-02
Abstract
No abstract record available.
Inventors
- 👤 Oscar D Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:33
CPC Classifications
F; F16; F16G; F16G3/00; F16G3/08; Y; Y10; Y10T; Y10T24/00; Y10T24/16; Y10T24/1652; Y10T24/1656; Y10T24/34; Y10T24/3499; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833
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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |