Patent US3147997A successfully refreshed from Google Patents.
US3147997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat for public use
Assignee: Individual
•
Filing: 1961-09-20
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Granted: 1964-09-08
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Expires: 1981-09-20
Abstract
No abstract record available.
Inventors
- 👤 Mason Ernest Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:03
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/12; A47C1/02; A47C1/022; A47C1/024; A47C1/026; A47C1/0265; A47C3/00; A47C3/02; A47C3/025; A47C3/03; B; B60; B60N; B60N2/00; B60N2/24; B60N2/242; Y; Y10; Y10S; Y10S297/00; Y10S297/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA623848A
Cited
US2711786A
Cited
US2847061A
Cited
US2808875A
Cited
US2824602A
Cited
FR1223600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |