Patent US1810987A successfully refreshed from Google Patents.
US1810987A
Expired / Lapsed
US
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Knife heater for wrapping machines
Assignee: AMF Inc
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Filing: 1930-01-24
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Granted: 1931-06-23
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Expires: 1950-01-24
Abstract
No abstract record available.
Inventors
- 👤 Schmitt Frank Reinhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:25
CPC Classifications
B; B65; B65B; B65B61/00; B65B61/04; B65B61/06; B65B61/10; Y; Y10; Y10T; Y10T83/00; Y10T83/283; Y10T83/293; Y10T83/869; Y10T83/8798; Y10T83/8817
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-06-22 | 1934-12-22 | 1935-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-06-22 | 1938-12-22 | 1939-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-06-22 | 1942-12-22 | 1943-06-23 | $7700.00 | Window Closed / Lapsed |