US2693522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cap heating apparatus
Assignee: American Seal Kap Corp of Delaware
•
Filing: 1953-02-05
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Granted: 1954-11-02
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Expires: 1973-02-05
Abstract
No abstract record available.
Inventors
- 👤 Harold W Martin
- 👤 Robert R Coly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:58
CPC Classifications
B; B67; B67B; B67B3/00; B67B3/02; B67B3/023; B67B5/00
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) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |