Patent US2475436A successfully refreshed from Google Patents.
US2475436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clothespin
Assignee: Individual
•
Filing: 1945-07-16
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Granted: 1949-07-05
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Expires: 1965-07-16
Abstract
No abstract record available.
Inventors
- 👤 Walter H Roark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:43
CPC Classifications
D; D06; D06F; D06F55/00; D06F55/02; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44291; Y10T24/44376; Y10T24/44385; Y10T24/44393; Y10T24/44453
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) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |