Patent US3518746A successfully refreshed from Google Patents.
US3518746A
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Film winding and staking method
Assignee: GAF Corp
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Filing: 1967-10-30
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Granted: 1970-07-07
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Expires: 1987-10-30
Abstract
No abstract record available.
Inventors
- 👤 James E Hoover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:29
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/43; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071; Y10T29/49826; Y10T29/49828; Y10T29/49829; Y10T29/53; Y10T29/53465
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US728183A
Cited
US1855876A
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US2658263A
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US2951656A
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US3187418A
Cited
US3315889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |