US3447987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for sealing bags
Assignee: QUENTIN H WILLIAMS
•
Filing: 1966-02-02
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Granted: 1969-06-03
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Expires: 1986-02-02
Abstract
No abstract record available.
Inventors
- 👤 Quentin H Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:13
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/60; B31B70/61; B31B2160/00; B31B2160/10; B31B70/004; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/1011; Y10T156/1034; Y10T156/1051
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1955310A
Cited
US2051106A
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US2197490A
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US2423080A
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US2749966A
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US2970634A
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US3190539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |