US2621038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Garage door operator
Assignee: Individual
•
Filing: 1951-08-31
•
Granted: 1952-12-09
•
Expires: 1971-08-31
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:06
CPC Classifications
E; E05; E05F; E05F13/00; E05F13/04; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1214594A
Cited
US1660768A
Cited
US1753083A
Cited
US1800635A
Cited
US2217761A
Cited
US2265214A
Cited
US2319136A
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US2388182A
Cited
US2543506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |