Patent US2038536A successfully refreshed from Google Patents.
US2473552A
Expired / Lapsed
US
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Device for heat sealing seams
Assignee: Individual
•
Filing: 1947-03-12
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Granted: 1949-06-21
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Expires: 1967-03-12
Abstract
No abstract record available.
Inventors
- 👤 Staw Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:23
CPC Classifications
D; D06; D06F; D06F77/00; A; A41; A41D; A41D27/00; A41D27/24; A41D27/245; D06F75/00; D06F75/30; D06F81/00; Y; Y10; Y10T; Y10T156/00; Y10T156/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |