US4164038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination calculator and time billing device
Assignee: Individual
•
Filing: 1977-07-05
•
Granted: 1979-08-07
•
Expires: 1997-07-05
Abstract
Abstract A portable calculator is adapted to provide a time billing function and a calculating function. A "stop watch" function is actuated to start the billing period and stop the billing period attributable to a particular account. A memory stores the accumulated billing time for the particular account until properly cleared.
Inventors
- 👤 Paul Nachtigal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:55
CPC Classifications
G; G06; G06F; G06F15/00; G06F15/02; G06F15/025; G04; G04G; G04G9/00; G04G9/0064; G04G9/007; G06Q; G06Q40/00; G06Q40/10; G07; G07C; G07C1/00; G07C1/10; G06Q30/00; G06Q30/04; G06Q40/12; G06Q40/125
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
181 words
In a portable electronic device having time keeping and calculating functions the combination comprising: first integrated circuit means having calculating and time keeping function; first control means for accessing said first integrated circuit means; first output means interconnected to said first integrated circuit means for displaying the output of said first integrated circuit means; first memory means having capacity to store information by specific address and cumulate said information; said control means including means for generating a time start and time stop signals; said first integrated circuit means including means for accumulating the time elapsed between the said time start and time stop signals; interconnecting means for conveying the accumulated elapsed time to said first memory means for storing said calculated elapsed time and keyboard means having a plurality of field keys and numerical keys; said field keys including a "time start" key, a "time stop" key and an "account key"; and, said memory means comprises a plurality of addressable memories; said addressable memories adapted upon the actuation of one of said "account key" to add elapsed time to stored time.
Claim 2
Dependent Claim
181 words
In a portable electronic device having time keeping and calculating functions the combination comprising: first integrated circuit means having calculating and time keeping function; first control means for accessing said first integrated circuit means; first output means interconnected to said first integrated circuit means for displaying the output of said first integrated circuit means; first memory means having capacity to store information by specific address and cumulate said information; said control means including means for generating a time start and time stop signals; said first integrated circuit means including means for accumulating the time elapsed between the said time start and time stop signals; interconnecting means for conveying the accumulated elapsed time to said first memory means for storing said calculated elapsed time and keyboard means having a plurality of field keys and numerical keys; said field keys including a "time start" key, a "time stop" key and an "account key"; and, said memory means comprises a plurality of addressable memories; said addressable memories adapted upon the actuation of one of said "account key" to add elapsed time to stored time.
Claim 3
Dependent Claim
22 words
The device claimed in claim 1 including further: a printer means connected to said first output means for producing a printed record.
Claim 4
Dependent Claim
32 words
The device claimed in claim 1 including further: an account balance key for causing said display to show the amount of time stored in a particular addressable memory without erasing said memory.
Claim 5
Dependent Claim
31 words
The device claimed in claim 3 wherein actuation of said "account balance" key enables the display of recalled stored time when the device is performing said time keeping and calculating functions.
Claim 6
Dependent Claim
19 words
The device claimed in claim 1 including further: a "clear account" key for returning to zero all addressable memories.
Claim 7
Dependent Claim
28 words
The device claimed in claim 5 including further: an "account balance" key for causing said display to show the amount of time stored in a particular addressable memory.
Claim 8
Dependent Claim
33 words
The device claimed in claim 1 wherein actuation of said "account key" and said "time start" key enables said integrated circuit means to calculate elapsed time and simultaneously be used for numercial calculations.
Claim 9
Dependent Claim
39 words
The device claimed in claim 7 including further a printing means which shows the account numbers, date and elapsed time to provide a printed record to supplement the accumulated time record stored in the addressable memory by account number.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-06 | 1983-02-05 | 1983-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-06 | 1987-02-05 | 1987-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-06 | 1991-02-05 | 1991-08-07 | $7700.00 | Window Closed / Lapsed |