US3497998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination door and canopy
Assignee: LEWIS H THOMAS
•
Filing: 1968-07-31
•
Granted: 1970-03-03
•
Expires: 1988-07-31
Abstract
No abstract record available.
Inventors
- 👤 Lewis H Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:46
CPC Classifications
E; E06; E06B; E06B5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307726A
Cited
US2973561A
Cited
US3038481A
Cited
US3044540A
Cited
US3265087A
Cited
US3368571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |