US2925770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone booth lighting and ventilating means
Assignee: Individual
•
Filing: 1955-09-01
•
Granted: 1960-02-23
•
Expires: 1975-09-01
Abstract
No abstract record available.
Inventors
- 👤 Percival H Sherron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:17
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/007; E; E04; E04H; E04H1/00; E04H1/12; E04H1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2092509A
Cited
US2296725A
Cited
US2321907A
Cited
US2526828A
Cited
US2628550A
Cited
US2581185A
Cited
US2547896A
Cited
US2730942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |