Patent US2942310A successfully refreshed from Google Patents.
US2942310A
Expired / Lapsed
US
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Resilient keeper unit for hook and eye type fasteners
Assignee: Individual
•
Filing: 1954-04-07
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Granted: 1960-06-28
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Expires: 1974-04-07
Abstract
No abstract record available.
Inventors
- 👤 Welsh C Whittlesey
- 👤 Harold S Jones
- 👤 Frank W Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:44
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/06; E; E04; E04B; E04B1/00; E04B1/38; E04B1/61; E04B1/6108; E04B1/612; E04B1/6183; E04B2/00; E04B2/74; E04B2/7407; E04B2/7448; Y; Y10; Y10T; Y10T292/00; Y10T292/68; Y10T292/696
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US569648A
Cited
US576455A
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US1380519A
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US1730026A
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US2186746A
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US2419420A
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US2647287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |