US2251634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for perforating
Assignee: Goodrich Corp
•
Filing: 1938-04-30
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Granted: 1941-08-05
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Expires: 1958-04-30
Abstract
No abstract record available.
Inventors
- 👤 Aubrey W Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:52
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/24; B29C; B29C65/00; B29C65/78; B29C65/7802; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/131; B29C66/50; B29C66/51; B29C66/53; B29C66/532; B29C66/5324; B29C66/53241; B29C66/63; B29C66/70; B29C66/71; B29C2793/00; B29C2793/0045; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1304; Y10T156/1309; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/041; Y10T83/0414; Y10T83/0481; Y10T83/283; Y10T83/293; Y10T83/384; Y10T83/391
Claims Analysis
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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) | 1944-08-04 | 1945-02-03 | 1945-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-04 | 1949-02-03 | 1949-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-04 | 1953-02-03 | 1953-08-05 | $7700.00 | Window Closed / Lapsed |