Patent US3902495A successfully refreshed from Google Patents.
US2356841A
Expired / Lapsed
US
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Filament cutting apparatus
Assignee: PPG Industries Inc
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Filing: 1943-08-19
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Granted: 1944-08-29
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Expires: 1963-08-19
Abstract
No abstract record available.
Inventors
- 👤 John J Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:46
CPC Classifications
D; D01; D01G; D01G1/00; D01G1/06; D01G1/10; Y; Y10; Y10S; Y10S83/00; Y10S83/913; Y10T; Y10T83/00; Y10T83/525; Y10T83/541; Y10T83/543; Y10T83/647; Y10T83/6472; Y10T83/869; Y10T83/8765
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) | 1947-08-29 | 1948-02-28 | 1948-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-29 | 1952-02-28 | 1952-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-29 | 1956-02-28 | 1956-08-29 | $7700.00 | Window Closed / Lapsed |