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Patent US3403413A successfully refreshed from Google Patents.
US3403413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head and body supporting apparatus
Assignee: Individual
•
Filing: 1966-10-21
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Granted: 1968-10-01
•
Expires: 1986-10-21
Abstract
No abstract record available.
Inventors
- 👤 Francis R Calhoun
- 👤 Sylvio G Codclla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:44
CPC Classifications
A; A47; A47G; A47G9/00; A47G9/10; A47G9/1009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US324785A
Cited
US366000A
Cited
US504443A
Cited
US630111A
Cited
US1276361A
Cited
US1377683A
Cited
US2548547A
Cited
US2924832A
Cited
US3263246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |