Patent US3500509A successfully refreshed from Google Patents.
US3500509A
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US
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Reinforced buttonhole
Assignee: AMH CORP
•
Filing: 1966-07-01
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Granted: 1970-03-17
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Expires: 1986-07-01
Abstract
No abstract record available.
Inventors
- 👤 James R Moden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:51
CPC Classifications
A; A41; A41H; A41H25/00; A41F; A41F1/00; A41F1/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45602; Y10T24/45775; Y10T24/4588; Y10T24/45937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2821764A
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US2748047A
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US3263290A
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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) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |